A radio controlled (RC) vehicle includes a receiver that is configured to receive an RF signal from a remote control device. The RF signal contains command data in accordance with a first coordinate system that is from a perspective of the remote control device. A motion sensor is configured to generate motion data. A processor is configured to transform the command data into control data based on the motion data and in accordance with a second coordinate system that is from a perspective of the RC vehicle. A plurality of control devices are configured to control motion of the RC vehicle based on the control data.

A toy holding adapter for removably attaching a fidget spinner to an article. The article may include an airplane; a helicopter, or a cycle, such as a motorcycle or a bicycle. The fidget spinner is mounted to the article to provide the article with a visual appearance of a rotating body associated with the article to which it is applied. The holding adapter has a stem extending from a back face that is operatively coupled to a receiver in the article. A central cavity in the front face receives a cylindrical adapter cup that is dimensioned to receive a holding disk of the fidget spinner.

Embodiments of the present invention discloses a wing detachment assembly and an aerial vehicle. The wing detachment assembly includes a first connecting portion and a second connecting portion, one of the first connecting portion and the second connecting portion being fixed on a wing and the other being fixed on a vehicle body. The second connecting portion includes a thumb wheel, the thumb wheel being provided with a threaded hole and being rotatably mounted on the vehicle body or the wing. The first connecting portion is threadedly connected to a threaded hole of the thumb wheel, the first connecting portion and the thumb wheel being fastened or detached when the thumb wheel is rotated. The aerial vehicle includes the foregoing wing detachment assembly. The wing detachment assembly and the aerial vehicle have the advantage of being convenient to detach and mount the wing.

The invention involves in a control system for a model airplane, in particular, a kind of model airplane whose flight posture can be automatically controlled in real time according to the flight data determined through detection devices and air pressure sensors.

An Adjustable Offset Mount (AOM) device for engines of a model airplane which includes shim-less components with concave and convex components which are used to easily and accurately correct horizontal and vertical thrust angles.

Systems, methods, and devices for propelling self-propelled movable objects are provided. In one aspect, a rotor assembly for a self-propelled movable object comprises: a hub comprising a first fastening feature; a drive shaft comprising a second fastening feature and directly coupled to the hub by a mating connection of the first and second fastening features, wherein the drive shaft is configured to cause rotation of the hub such that the mating connection of the first and second fastening features is tightened by the rotation; and a plurality of rotor blades coupled to the hub and configured to rotate therewith to generate a propulsive force.

The invention concerns an electronic component that comprises a printed circuit board stack with multiple printed circuit boards arranged one on top of the other and that is used, in particular, for model aircraft or commercially utilized unmanned aircraft. The printed circuit boards are held at a distance from one another by spacers. The fastening elements that are provided here are electrically conductive in design, and the printed circuit boards are connected to one another in an electrically conductive manner and also mechanically by these fastening elements.

The present disclosure describes flight training systems and methods for radio-controlled (RC) airplanes that rely on inertial attitude estimates. Preferred embodiments include an RC airplane with one or more control processors configured to (i) estimate an inertial attitude of the RC airplane based on one or more measurements from an attitude sensor array and (ii) control the inertial attitude of the RC airplane based the inertial attitude estimate. In operation, controlling the attitude of the RC airplane may include both controlling the RC airplane to a specific inertial attitude and/or keeping the inertial attitude of the RC airplane within a predefined flight envelope.

Systems, methods, and devices for propelling self-propelled movable objects are provided. In one aspect, a rotor assembly for a self-propelled movable object comprises: a hub comprising a first fastening feature; a drive shaft comprising a second fastening feature and directly coupled to the hub by a mating connection of the first and second fastening features, wherein the drive shaft is configured to cause rotation of the hub such that the mating connection of the first and second fastening features is tightened by the rotation; and a plurality of rotor blades coupled to the hub and configured to rotate therewith to generate a propulsive force.

Systems, methods, and devices for propelling self-propelled movable objects are provided. In one aspect, a rotor assembly for a self-propelled movable object comprises: a hub comprising a first fastening feature; a drive shaft comprising a second fastening feature and directly coupled to the hub by a mating connection of the first and second fastening features, wherein the drive shaft is configured to cause rotation of the hub such that the mating connection of the first and second fastening features is tightened by the rotation; and a plurality of rotor blades coupled to the hub and configured to rotate therewith to generate a propulsive force.